import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
import Params from '../components/goods/Params.vue'
import GoodsList from '../components/goods/List.vue'
import Add from '../components/goods/Add.vue'
import Order from '../components/order/Order.vue'
import Report from '../components/report/Report.vue'



Vue.use(VueRouter)

const router = new VueRouter({
    routes: [
        // 登录页面
        {
            path: '/login',
            component: Login
        },
        // 重定向
        {
            path: '/',
            redirect: '/login'
        },
        {
            path: '/home',
            component: Home,
            redirect: '/welcome',
            //子路由
            children: [
                {
                    path: '/welcome',
                    component: Welcome
                },
                {path: '/users',component: Users},
                {path: '/rights', component: Rights},
                {path: '/roles', component: Roles},
                {path: '/categories', component: Cate},
                {path: '/params', component: Params},
                {path: '/goods', component: GoodsList},
                {path: '/goods/add', component: Add},
                {path: '/orders', component: Order},
                {path: '/reports', component: Report},
            ]
        }
    ]
})

//挂在路由导航守卫
router.beforeEach((to, from, next) => {
    // to 将要访问的路径
    //from 表示从哪个路径跳转来
    // next 是一个函数，表示放行
    // next() 放行   next('/login')  强制跳转

    //访问登陆页，直接放行
    if(to.path === '/login') return next();
    // 获取token
    const tokenStr = window.sessionStorage.getItem('token');
    if(!tokenStr) return next('/login');
    next();
})

export default router
